ATLANTA — The mix of jobs in Georgia results in unequal income spreads in some counties, according to a report released by Georgia State University.

The study published in June by the Andrew Young School of Policy Studies shows the distribution of jobs and the resulting income divisions.

For example, Chatham County has nearly 3 percent of all jobs in the state, with 19 percent at the highest incomes, 43 percent in the middle and 38 percent paying less than $30,000. In Fulton County, the division is essentially equal for the three pay ranges, but most counties tilt toward one end or the other.

Across the state, 23 percent of workers are in jobs that pay more than $50,000 yearly, and 33 percent are in jobs paying less than $30,000. In between are 44 percent.

In two counties, Schley and Wilkinson, more than half of their workers have jobs in the highest-paying category, but they are both rural.

Among the largest counties outside of metro Atlanta, only Muscogee has more than the state average in the high-earning positions with 24 percent.

The author, Zackary Hawley, who was then a research associate for the school’s Fiscal Research Center, used data from the Department of Labor that employers must file about jobs and wages. He also charted where in the state all of the jobs are.

“Employing over half a million jobs, the establishments within Fulton County hold the largest share of total state employment, 14.83 percent. Cobb, Gwinnett, and DeKalb counties follow Fulton County as the next largest employment places. Rounding out the top five, Chatham County establishments employ approximately 100,000 employees or 2.7 percent of total state employment,” wrote Hawley.

The 28 counties that comprise the Metropolitan Statistical Area of Atlanta employ 47.33 percent of the state’s total employment.